Explore our leading range of explosion-proof, low-voltage, and high-voltage three-phase asynchronous motors designed for hazardous and industrial applications.
As the authorized distributor of Wolong, Shaanxi Nanfang Motor Technology Co., Ltd delivers world-class propulsion and driving technologies to global enterprises. Wolong Electric Drive Group Co., Ltd, founded in 1984 and listed on the Shanghai Stock Exchange in 2002 (code SH600580), stands as a global behemoth in motor and control system manufacturing.
Through three decades of expansion, Wolong has solidified its footprint across the globe, boasting 3 corporate manufacturing bases, 39 advanced factories, and 3 state-of-the-art R&D centers. Committed to a global brand strategy, Wolong leverages international technology integrations to lead in process capability, premium manufacturing, and global sales networks.
A granular look at the high-specification mechanical design and materials chemistry that make our motors industry-leading in durability and mechanical output.
Our stator coils utilize polyester film insulation reinforced with glass cloth. We source high-mica content tape (low-powder and medium-powdered mica) to build an insulation barrier capable of handling extreme voltage surges. Every stator assembly undergoes our proprietary VPI (Vacuum Pressure Impregnation) process, resulting in a hermetically sealed, void-free core that offers unparalleled thermal stability and moisture resistance.
Employing a robust squirrel cage configuration, our cast aluminum rotors are manufactured using centrifugal casting or advanced high-pressure die-casting. This creates a solid, unified structure integrating the rotor bars and end rings, assuring consistent starting torque. For massive industrial ratings, we build copper bar rotors utilizing premium dynamic balancing and state-of-the-art end ring welding to prevent cage failure under cyclic thermal stress.
Designed using multi-physics structural and fluid thermal simulation platforms, our frames are engineered with high-strength cast iron or structural steel. The mechanical architecture incorporates significant structural redundancy, ensuring high torsional stiffness to absorb heavy shocks. Ample inherent frequency isolation margins guarantee minimal resonant vibration levels and optimize heat dissipation pathways.
Comprising a rigid fan cover body, an air guide cylinder, protective windows, and integrated silencer plates, the system reduces high-frequency operational noise. The side-entry air intake design optimizes ventilation paths, minimizing energy loss from directional changes and offering an IP22 rating to prevent direct contact with rotating elements.
VPI ensures the elimination of air voids in the slot portion of the stator. By replacing air pockets with high-grade resin, the motor achieves exceptional dielectric strength and is shielded from corrosive chemicals, salt air, and conductive coal dust.
How strategic international acquisitions have positioned Wolong as an unrivaled tech powerhouse combining European engineering with scale production.
To realize its vision of leading the global AC motors and drives industry, Wolong embarked on a series of acquisitions targeting century-old brands known for their unparalleled technology and specialized application expertise:
Wolong acquired a 97.94% controlling stake in the Austrian ATB Group. This acquisition integrated the famous Morley mining motor brand (possessing a 130-year lineage in underground coal mine equipment) and Laurence Scott (renowned for custom low-starting-current generators and critical naval auxiliary equipment).
Brook Crompton brought over 100 years of low-voltage and medium-voltage motor design, known globally for the high-efficiency W Series. Schorch (founded in 1882) brought elite technology in high-output, heavy-duty drive systems for petrochemical and oil & gas pipeline applications.
Since 1999, Wolong has partnered with OLI, the global leader in industrial vibrators and electrical sensors, providing high-efficiency solutions to concrete consolidation, agricultural processing, and material handling systems worldwide.
CNE, China's premier explosion-proof motor R&D and manufacturing base, officially joined Wolong. Their highly specialized Ex motors are trusted globally across military, petrochemical, mining, and nuclear power installations.
General Electric's commercial and industrial motor division integrated into the Wolong portfolio, providing advanced mechanical architectures for heavy manufacturing, cement production, water management, and oil pipeline transmission lines.
Global industrial procurement has moved beyond buying off-the-shelf components. Today’s purchasers focus on risk mitigation, manufacturing speed, and supply chain predictability. Our digitized Factory 4.0 production framework addresses these challenges directly:
Integrated Digital Design: By simulating electromagnetic, mechanical, and thermal properties on a single cloud platform, we reduce the R&D-to-production cycle by up to 40%. Any flange-mounted or foot-mounted configuration can be modeled and manufactured with negligible design latency.
Vertical Integration: From casting and dynamic balancing to automatic robotic winding and final VPI curing, our production lines are fully localized. This insulates our manufacturing timeline from regional supply chain shocks, securing reliable delivery schedules for massive infrastructure projects.
Continuous Quality Control: Automated inspection checkpoints verify winding integrity, rotor alignment, and insulation breakdown voltages. Each motor receives a unique tracking code detailing its manufacturing history and test logs, ensuring complete traceability.
Understanding mounting mechanics, mounting standards, and key design improvements shaping the future of global motor installations.
Motors with dual mount configurations—specifically Flange (B5/B14) and Foot (B3) layouts—provide crucial adaptability for mechanical engineers. In modern machinery, the selection of the correct mounting configuration directly determines mechanical alignment precision and vibrational lifetime:
Featuring feet cast into or bolted onto the motor frame, B3 is the standard for pumps, compressors, and belt-driven systems. Feet absorb horizontal torsional stresses, transferring forces safely to a rigid concrete foundation.
Featuring a smooth shaft flange with clearance holes, the B5 mount allows direct coupling to gearboxes and blowers, eliminating alignment deviations and saving axial space.
Combining the heavy load-bearing feet of a B3 with the direct-mount face of a B5 flange, this configuration supports extreme overhung loads and high-torque direct couplings.
1. Ultra-High Efficiency (IE4/IE5 & PMSM): Modern regulations demand motors that minimize power losses. Transitioning from standard induction to Permanent Magnet Synchronous Motors (PMSM) controlled by Variable Frequency Drives (VFD) has become standard practice for global industries aiming for carbon neutrality.
2. Smart Sensors & Predictive Maintenance: Integrating sensors directly onto the motor frame enables real-time tracking of winding temperature, bearing vibration, and current draw. This structural data flags potential issues before a mechanical breakdown occurs.
3. Explosion-Proof Security in Harsh Environments: Mining, chemical processing, and marine applications require robust construction. Utilizing explosion-proof enclosures (ATEX/IECEx certified) limits thermal build-ups and prevents sparks from reaching volatile environments.
Every motor we supply undergoes rigorous mechanical and electrical stress testing to meet the strict regulatory guidelines of international markets.
To cross international trade barriers and assure technical compliance, Wolong maintains an extensive network of quality certifications across multiple industries and geographic zones:
ATEX / IECEx
CSA Standard
CE Certification
CCC Standard
SABS Approved
TestSafe Mining
Where high-performance flange and foot mounted motors prove their reliability in demanding industrial operating conditions.
Operating continuously in atmospheres loaded with explosive gasses, our ATEX-certified flameproof motors drive centrifugal pumps, agitators, and compressor loops, maintaining process safety and mechanical longevity under high thermal stress.
In deep underground mines filled with highly combustible coal dust, our heavy-duty, cast-iron frame motors run massive coal shearers, conveyors, and ventilation fans, offering high torque and reliable IP55/IP66 dust protection.
Municipal wastewater and clean water supply lines rely on continuous pumping systems. Foot-mounted B3 motors provide stable foundation attachments that resist water hammer shock loads and mechanical stress.
In-depth insights into selection criteria, certification standards, and motor mounting engineering.
Explore our specialized range of variable speed, flameproof, high-temperature, and positive pressure motors engineered for critical global infrastructure projects.
NANFANG
